Art of coking hydrocarbons



Nov. 14, 1933. A. c. voBAcH ET AL.

ART OF COKING HYDROCARBONS Filed March 7. 1929 ATTORNEYS Patented Nov.14, 1933 PATENT OFFICE ART oF coKING HrnnocAnoNs Arnold o. volition,Whiting, Ind., and Home K.

Rogers, Chicago, Ill., assignors to Sinclair Relining Company, New York,N. Y., a corporation of Maine Application March -f1, 1929. serial No.345,004

3 Claims.

This invention relates to an apparatus for carrying out cokingoperations in which a charge of coke is formed and deposited within acoking` coking operation after discharge of the cokeI lo product. 1talso promotes the production of commercially more valuable lump coke,minimizing'tlle production of coke fines. It has other advantages,particularly in certain forms, which will appear as the descriptionproceeds.

One form of apparatus embodying the invention is illustrated,diagrammatically and conventionally, in elevation and partly in section,in the accompanying drawing.

Referring to the drawing, the coking receptacle 2o there illustratedcomprises a frustrum-shaped chamber 1, a removable head 2 and a rama.The head 2, when removed, leaves the larger end of the chamber 1 openover. its entire area. This large-diameter head may, for example, besealed as described in application Serial No. 344,940, filed March 17,1929, by Eugene lC'. Herthel, now Patent No. 1,819,095. The ram 3 ispositioned in the smaller end of the chamber 1 and is adapted to bedriven, axially, into the chamber 1 for displacing coke chargestherefrom. The ram illustrated is hydraulically powered; any convenientpower means may be used. The chamber 1 is lined with lire-brick, whichmay be supported by strips, horizontally arranged, fastened to theinterior of the chamber shell. This lining, identied in the drawing bythe reference numeral 8, is,vwith advantage, covered with an innerlining 9 of some frangible material, a fire-clay or fire- .clay andwater-glass paste for example.

The coking receptacle illustrated is arranged with the larger end up andthe smaller end down. This is a particularly advantageous arrangement.An unusually large vapor space is thus provided above the accumulatingcharge of coke in operl ation. A heavy oil stock to be coked is sprayedin through connection4, the coking medium, a hot gas and vapor mixturefrom a vapor phase oil cracking operation for example, is'releasedwithin the coking receptacle through connection 5,

andthe resulting vapor mixture escapes through the vapor outlet l6. Theconnection 5, or'each of such connections if several are provided, may,with advantage, be arranged tangentially to prolong the travel of thecoking medium through the coking receptacle.

v removable head adapted to close the larger end The coking receptaclemay also be arranged, for example, in anv inverted position, withthesmaller end up. In this position the ram is assisted by gravity indisplacing coke charges from the coking receptacle.

The coking operation proper may, for example, be carried out asdescribed in applications Serial No. 340,996, filed February 18, 1929,and Serial No. 341,214, led February 19, 1929, by Harry L. Pelzer, nowPatent No. 1,831,719 and Patent No. 1,873,024, respectively, and SerialNo. 347,533, ledMaroh 16, 1929, by Edward W. Isom andl George H. Taber,Jr., now Patent No. 1,873,068. The apparatus of the invention is ofspecial value for carrying out these operations, but it is also of moregeneral application.

In operation, with the apparatus illustrated, assuming the cokingreceptacle cleaned and lined, the head 2 is clamped in place withone ormore loops 7 of wire rope suspended within the coking chamber from thehead. The coking operation is then begun. When the coking operationproper is completed, the head 2 is removed leaving 1the loop or loops 7imbedded in the coke charge. The coke charge is then displaced byforcing the ram 3 into the coking chamber, the force of the ram actingto fracture the lining 9 and release the coke charge. This is easilyeffected when a frangible inner lining is used. The entire mass of cokeconstituting the cokecharge is then hoisted from the chamber 1, by meansof the loop or loops 7. The inner lining is then renewed, the head 2replaced, and the next coking operation begun.

We claim:

1. In the manufacture of coke from heavy oil stocks by reducing theheavy oil stock to coke in a coking receptacle, the improvementcomprising covering the interior of the coking receptacle with afrangible material to provide a frangible lining, reducing the heavy oilstock to ya solid coke mass in the coking receptacle by intimatelycontacting a hot 'gaseous material with the heavy oil stock, fracturingthe frangible lining by applying force to the coke mass, and removingthe coke en bloc from the coking receptacle.

2. A coking receptacle comprising` a frustrumshaped chamber, a frangiblelining therefor, a

of said chamber and, when removed, to leave the larger end of saidchamber open over its entire area, and a rampositioned in thev smallerend of said chamber adapted to move axially into said chamber.

material within the lower portion of the chamber, said means beingdisposed entirely outside of the inner surface of the chamber, and a rampositioned in the smaller end of said. chamber adapted to move axiallyinto said chamber.

ARNOLD C. VOBACH. HORACE K. ROGERS.

